How Many Grams of Water Are Made from the Reaction

question 55

Multiple Choice

How many grams of water are made from the reaction of 4.0 grams of hydrogen gas?
Given the reaction: 2H₂ + O₂ → 2H₂O

• A)18
• B)72
• C)36
• D)4.5
• E)not enough information

---

Definitions:

Systemic Circuit

A part of the cardiovascular system that carries oxygenated blood away from the heart to the body, and returns deoxygenated blood back to the heart.

Capillaries

Microscopic blood vessels that facilitate the exchange of water, oxygen, carbon dioxide, and many other nutrients and waste substances between blood and tissues.

Diastolic

Pertaining to diastole, which is the phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood.

Left Ventricle

The chamber of the heart that receives oxygen-rich blood from the left atrium and pumps it into the aorta to be distributed throughout the body.